26 lines
783 B
Rust
26 lines
783 B
Rust
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//! Contains error types and other error handling tools.
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pub use crate::parse::ParseIntError;
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/// Impls std::error::Error for the specified type with appropriate attributes, possibly returning
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/// source.
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#[macro_export]
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macro_rules! impl_std_error {
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// No source available
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($type:ty) => {
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#[cfg(feature = "std")]
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#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
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impl std::error::Error for $type {}
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};
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// Struct with $field as source
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($type:ty, $field:ident) => {
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#[cfg(feature = "std")]
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#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
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impl std::error::Error for $type {
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fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
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Some(&self.$field)
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}
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}
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};
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}
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